31 July 2014, 03:16 PM ET
The U.S. Geological Survey plans to map the continental shelf off the East Coast using acoustics, but some environmentalists say marine mammals might be at risk.
31 July 2014, 02:21 PM ET
Rams are male bighorn sheep. They have long, curved horns that they use to fight for dominance.
31 July 2014, 02:01 PM ET
Miniaturization over 50 million years may have allowed birds to survive and evolve from their dinosaur relatives. In essence, bird ancestors out-shrank and out-evolved their dinosaur relatives to survive where these giant, less evolvable beasts couldn't.
31 July 2014, 11:59 AM ET
Buffalo are large bovines that live in Africa and Asia. They are related to American bison, but they are different animals.
31 July 2014, 10:21 AM ET
Arms into feathered wings; bones hollowing out; morphology minimizing: The lineage of modern day birds includes the Tyrannosaurus and the Velociraptor, dating back over 50 million years.
30 July 2014, 08:22 PM ET
A recent study investigates the relationship between stress hormones and parental care in the banded mongoose.
30 July 2014, 05:23 PM ET
In a new case report, scientists detail a gruesome anteater attack that left one man dead in northwestern Brazil. While such incidents are rare, the attack should serve as a warning to hunters and others who share the same turf as anteaters.
30 July 2014, 04:04 PM ET
Bears are omnivorous mammals found all over the world. There are eight species, and most of them are endangered.
30 July 2014, 02:38 PM ET
In this test of spatial cognition, red-footed tortoises presented with shapes in varying positions were rewarded with bits of strawberry when they touched the targets.
30 July 2014, 02:00 PM ET
For 53 months, scientists watched a female octopus in the deep sea vigilantly guard a single clutch of eggs until they hatched. This was the longest brooding period scientists have ever observed — not just for octopuses, but also for all animals.
30 July 2014, 02:00 PM ET
A real-life "Octomom" off the coast of California has been declared a champion of parenting in the animal world. Scientists watched as she shielded her eggs for a record 4.5 years.
30 July 2014, 11:27 AM ET
Improving the design of the world's tiniest drones could start with taking a closer look at one of nature's smallest and most efficient flyers, the hummingbird.
30 July 2014, 10:32 AM ET
When compared to a Black Hornet autonomous micro-helicopter, the Anna's hummingbird (seen at various speeds) was 27% more efficient at hovering. This Stanford University research could lead to bird-inspired helicopters and other engineering advances.
30 July 2014, 10:12 AM ET
Geckos were research stars in space long before the outpouring of media attention that focused on their mission last week. Before space agencies can begin complicated experiments, scientists need to determine how these tiny lizards adapt to life in space.
30 July 2014, 10:00 AM ET
Scientists poring through buckets of raw amber from the Dominican Republic discovered a new insect species. The amber was collected in 1959 and rediscovered in 2011 in a closet.
29 July 2014, 07:41 PM ET
Puma, panther, cougar and mountain lion are different names for the same species of big cat that can be found from Canada to the southern tip of South America.
29 July 2014, 12:08 PM ET
They've been described as walking artichokes and the most trafficked mammals in the world. Now, conservationists warn that pangolins, or scaly anteaters, could be eaten out of existence if illegal hunting and poaching continue.
29 July 2014, 10:59 AM ET
Conservationists warn that all eight species of pangolins, or scaly anteaters, may be eaten to extinction if illegal hunting and poaching continues.
28 July 2014, 03:05 PM ET
The previous mass extinction, which wiped out the dinosaurs, happened about 65 million years ago, likely from a catastrophic asteroid that collided with Earth. In contrast, the looming sixth mass extinction is linked to human activity.
28 July 2014, 02:06 PM ET
Ranavirus may be partly to blame for dwindling frog populations.
28 July 2014, 01:55 PM ET
Mammoths and mastodons of present-day southwestern Ohio and northwestern Kentucky, were homebodies that tended to stay in one area, a new study finds.
28 July 2014, 08:11 AM ET
A municipal worker who got stung by an estimated 1,000 bees while mowing a park lawn on Thursday (July 24) was in stable condition. So how did he survive the buzzing attack?
28 July 2014, 12:02 AM ET
The space rock that wiped out most of the dinosaurs may have had a colossal case of bad timing. If the impact had occurred a few million years earlier or later, more of the majestic beasts may have survived, scientists say.
26 July 2014, 04:00 AM ET
When commercial whaling was banned in 1986 it put an end to a harvest that threatened the existence of some of the most majestic animals on Earth.
26 July 2014, 03:49 AM ET
Animals have evolved to occupy almost all corners of the Earth. To survive, no matter the weather outside, they all need temperature-sensitive bodily reactions to work.
26 July 2014, 03:24 AM ET
Feed the birds — but not bread, crackers and junk food.
26 July 2014, 02:47 AM ET
Despite film portrayal, bonobos tend to be peacekeepers, even after experimentation.
25 July 2014, 11:56 AM ET
As a zookeeper, sometimes you get to pick favorites (but don't tell the monkeys).
25 July 2014, 11:31 AM ET
Researchers observed that a certain species of squirrel in New York City adapts its behavior to that of humans by avoiding unnecessary contact with people and going about its day uninterrupted.
24 July 2014, 05:42 PM ET
The birds of the American Southwest are as numerous and diverse as the multiple environments and landscapes upon which they carry on their daily life cycles.
24 July 2014, 03:14 PM ET
Parrots, with colorful plumage and the ability to mimic human speech, are popular pets. This large order of birds includes parakeets, macaws, cockatiels and cockatoos.
24 July 2014, 02:11 PM ET
Steven Spielberg's 'Jurassic Park' might need a little more revising — a newly discovered dinosaur species offers hints that feathers were much more common among the ancient beasts than once thought.